The game is very inconsistent. There are times when you stand still, you will not be caught, despite not being behind cover. There are also times where when you sneak out in the open, in front of the guard, you will not be caught, which suggests that there is a small line of sight that is not visually-understood. 

However, I do like the visuals of the game, and the animations are appreciated. I liked it overall, though I find the gameplay a little too slow for my liking. Perhaps with music and sound, it'd keep my attention better but for now, it is too uninteresting to keep me playing.